3y-20=7(y-4)

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Solution for 3y-20=7(y-4) equation: 



3y-20=7(y-4)

We move all terms to the left:

3y-20-(7(y-4))=0



We calculate terms in parentheses: -(7(y-4)), so:

7(y-4)

We multiply parentheses

7y-28

Back to the equation:

-(7y-28)



We get rid of parentheses

3y-7y+28-20=0

We add all the numbers together, and all the variables

-4y+8=0

We move all terms containing y to the left, all other terms to the right

-4y=-8

y=-8/-4

y=+2

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